Carbureter for gasolene-engines.



No. 850,839. PATENTED APR. 16, 1907.

E. BOWERS. GARBURETER FOR GASOLENE ENGINES.

APPLICATION FILED JULY 28, 1906.

construction and combinations of parts, as

. tween the inner surface of the outer shell 2 formedbetween them.

,larger in diameter than hurrah srafrns rn rnnr orrron.

FREDSON E. BOWERS, OF NEW HAVEN, CONNECTICUT, ASSIGNOR TO THE F. E. BOWERS 00., OF NEW HAVEN, CONNECTICUT, A' CORPORATION.

CARBURETER FOR GASOLENE-ENGI'NES.

No. 850,339. Specification of Letters Patent.

Application filed July 28, 1906. Serial No. 328,171.

Patented April 16, 1907.

To all whom it may co c I lower shell 7, is mounted ina supply-pipe 5, Be it known that I, FREDSON E. Bownns, leading from a float-chamber 3, containing a citizen of the United States, residing at l the float which controls the amount of gaso- New Haven, in. the county of NewHaven lene fed to the spray-nozzle. A throttleand State of Connecticut, have invented a valve 4 of any approved construction is lonew and useful Improvement in Carbureters cated upon the top of the outer shell 2 and for Gasolene-Engines; and I do hereby del receives the mixture from the upper end of clare the following, when taken inconnecl the upper shell 8. At opposite pointsin the tion with the accompanying drawings, and sides of the outer shell2 I form air-ports 9, the letters of reference marked thereon, to be normally closed by valves 10, controlled by a full, clear, and exact description of the springs 11. Air is also taken through the same, and which said drawings constitute part lower end of the lower shell. of this specification, and represent,'in The operation of my improved, carbureter v Figure 1, a side view of a carbureter conis as follows: The engine being started in the structed in accordance with my invention usual manner, and shown in its relation to the usual float l float-chamber 3 through the pipe 5 into the chamber and throttle-valve. Fig. 2 shows I spray-nozzle 6, from which it is sprayed into the carbureter in vertical central section and I the upper shell 8, where'it is mixed with curin its relation to the usual float-chamber; Fig. 3, a vertical central section through the The resulting suction in the upper shell carbureter in a line at right angles toFig. 2. creates a vacuum in the concentric vacuum-v My invention relatestoan improvement in chamber 2. The greater the speed of the carbureters for gasolene-engines, being to produce a simple and compact deshell 8, and hence the more the rarefication of vice constructed with particular reference to I the air in the vacuum-chamber 2'. At a automatically proportioning the respective predetermined point in the speed ofthe enamounts of air and gasolene in the mixture 1 gine the suction produced by its action will according to the requirements of the work to overcome the power oflthe springs 11 and be done and to securing a more perfect minallow the valves 10 to open'so as to permit gling of-the gas and air under all conditions. air to rush into the vacuum-chamber 2 and Nith these ends in view my invention conthence enter the upper shell 8 through the sists in a carbureter havingcertain details of inclined annular airpassage 2 and airintake space 2" at such an inclination to will be hereinafter described, the g'asolene rising in spray or jetsfrom the larly recited in the claims.

in carrying out my invention as herein shown I employ a conical upper shell 8 and a conical lower shell7, located one above the other in a cylindrical outer shell 2, a concentric vacuum-chamber 2 beingformed beand particuspray that a perfect commingling ofair and gasolene will result without increasing "the flow of gasolene, for the reason that the admission of air through the air-ports 9 into the vacuum-chamber2 will decrease the pressure of air drawn upward through the lower chamber, and hence slightly decrease the amount of gasolene fed. The air rushing in through the ports-9 will almost immediately restore the balance of pressure and permit the springs 11 to close the valves 10, which will, as described, open and close automatically according to the fluctuations of pressure within the device in the speed at which t is the carbureter for its supply of vapor is run and the outer surfaces of the up er and lower shells '7 and 8. The conical she ls 7 and 8 are I arranged with their smaller ends adjacent, and the lower end of the upper shell being the upper end of the lower shell an annular. intake-space 2 is As shown, the upper shell is furnished at its lower end with an outwardly-flaring flan e 12, corresponding in pitch to the pitch of t e lower shell, so as to produce a conical air-passage 2, leading to Aspray-nozzle 6, located inthe -lcenter-of th upper end of the the valves '10 opposite each gasolene is drawn from the rents of airrising' through the lower shell.

the object engine the greater the suction in the upper nozzle 6 that the air will so intersect the roduced by changes engine drawing on IOO or by changes in the amount of work the en other 'equalizes the air-pressure in the vacuum-chamber 2, so thatthe air rushing through the assage 2 and space 2 into the upper shell Wlll be at every point under equal pressure'and insure a uniform and perfect commingling of the air and vapor.

I claim 1. In a carburetor, the combination with an upper shell and a lower shell made independent of each other and constructed and arranged to form an air-intake space between their adjacent ends, of an outer shell inclosing the said upper and lower shells and forming a concentric vacuum-chamber about the same, a spray-nozzle entering; the said lower shell, and means for automatically eon trolling the entrance of air into the said chamber from which the air enters the said upper shell through the said air-intake space.

2. In a carbureter, the combination with a tapering upper and a tapering lower shell made independent of each other, the former beinp made larger in diameter than the latter to produce an annular air-intake space be tween their adjacent ends, of an outer shell inclosing the said upper and lower shells and forming a concentric vacuun-i-chamber about the same, a spray-nozzle entering the lower shell, and means for automatically controllinp the entrance of air into the said vacuumehamber. 1

In a carburetor, the combination with a tapering upper and atapering lower shell having an air-intake spare between them, an annular flange located at the lower end of the upper shell and producing an inclined annular passage leading, to the said air-intake space, an outer shell inclosing the said upper .than t and lower shellsiand forming a concentric vacuum-chamber about the same, a spray nozzle entering the lower shell, and means for automatically controlling the entrance of air into the said vacuurh-chamben.

4. In a.carbureter,'the combination with a tapering upper and a taering lower shell, the former being made arger in diameter thanthe latter to form a concentric air-intake space between their adjacent ends, of an outer shell inclosing the said upper and lower shells and forming a concentric vacuum chamber about the same, and two or more valves automatically controlling the inlet of air into the said vacuum-chamber and ar ranged to equalize the air-pressure therein.

5. In a carbureter, the combination with a conical upper shell, of a conical lower shell, the up er shell being made larger in diameter lie lower shell for the pro .luetion of an annular airintake space between the two shells, an outwardlydlaring llangelocated at the lower end of the upper shell and extending down over the upper end of the lower shell to form an inclined air-passage leading to the said air-intake space, an outer shell inclosingthe upper and lower shells and forming a vacuum-chainber around the same, a spray-nozzle entering the lower shell, and means for automatiral-ly controlling the inlet of air into the said vaeuum-chamber.

In testimony whereof I have signed this specification in the presence of two subscribingwitnesses.

' FREDSON E. BOWERS. Witnesses:

FREDERIC UzEannn, CLARA L, WEED. 

